Due to the ambiguous nature of the string "Dnub," direct web searches can yield unsafe results (malware/adware). The following official channels are recommended for sourcing the file:

You installed the driver but the device is in “factory mode.” Run DnubResetTool.exe (download from manufacturer) to switch to normal mode.

Since it shares hardware with the Linksys AE2500 , you can often use the official Linksys Support Page to search for AE2500 drivers if the generic ones fail. 3. Installation Guide

If you're looking for a on a related topic, I’d be happy to help with something like:

Download a free serial terminal like Termite or PuTTY . Open the corresponding COM port with 115200 baud, 8N1. Type AT – if you get OK , your driver works perfectly.